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Codex CLI

OpenAI · CLI

Codex CLI 0.146.0-alpha.5

0.146.0-alpha.4→0.146.0-alpha.5·July 23, 2026 at 8:17 PM UTC

Alpha prerelease: standalone installers default to the OpenAI releases CDN (with GitHub fallback), plus ongoing MCP and runtime groundwork.

Changelog

  • [changed] Standalone installers now download from https://releases.openai.com/codex by default and fall back to GitHub Releases if a metadata or asset download is unavailable.
  • [new] You can force GitHub Releases for the install scripts by setting CODEX_INSTALLER_USE_RELEASES_OPENAI_COM to false (0 and no are also accepted).

Under the hood

  • Expanded MCP support surface, including connection management, server binding, and session MCP runtime pieces.
  • Thread-store local writer locking and TUI turn-runtime structure for more reliable session/turn handling.
  • Data-model and config updates around multi-agent settings, MCP tool naming, marketplace/plugin metadata, and related API payloads.
  • Dependency refresh: added wildmatch, dropped color_quant.

Upgrade notes

  • Default install source is now the OpenAI releases host. To keep pulling installer assets from GitHub Releases only:
curl -fsSL https://chatgpt.com/codex/install.sh | CODEX_INSTALLER_USE_RELEASES_OPENAI_COM=false sh

$env:CODEX_INSTALLER_USE_RELEASES_OPENAI_COM='false'; irm https://chatgpt.com/codex/install.ps1 | iex

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Older release← 0.146.0-alpha.4Newer release→ 0.146.0-alpha.6
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